Each Shared Hosting account has a limit to prevent disruptions caused by a single user. Here you can find explanations of the limits.
CPU: The % CPU represents 1 full CPU core that your account can use
Memory: This is the maximum physical memory your account can use before you get errors.
Entry Processes (EP): This is the count of processes of concurrent connections for PHP, MYSQL etc. It is not a limit for how many users can visit your website / webapp.
NPROC: This is the maximum number processes you can utilize.
IOPS: This represents the total amount of read / write operations per second.
Inode: Represents the total amount of files you can write. If you hit this limit you have to remove files.
